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General Princip...

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  • Question 1
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    Which is wrongly mached:

  • Question 2
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    Composition of azurite mineral is:

  • Question 3
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    Predict the mode of occurrence of the following metals:

    The correct answer is:

  • Question 4
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    Volatile metals are purified by :

  • Question 5
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    Aquaregia is ___ part conc. HCI and ___ part conc. $$HNO_3$$.

  • Question 6
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    Identify the process to which the following reaction belongs : 


    $$\displaystyle { Al }_{ 2 }{ O }_{ 3 }.{ 2H }_{ 2 }O+{ Na }_{ 2 }{ CO }_{ 3 }\longrightarrow { 2NaAlO }_{ 2 }+{ 2H }_{ 2 }O+{ CO }_{ 2 }$$

    $$\displaystyle { 2NaAlO }_{ 2 }+{ 2H }_{ 2 }O+{ CO }_{ 2 } \underrightarrow { 50-{ 60 }^{ o }C } { Al }_{ 2 }{ O }_{ 3 }.{ 2H }_{ 2 }O+{ Na }_{ 2 }{ CO }_{ 3 }$$

  • Question 7
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    Which one of the following metals can not be extracted by using Al as a reducing agent ________________.

  • Question 8
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    Which of the following metal is present in native state?

  • Question 9
    1 / -0

    The most abundant metal in the earth crust is:

  • Question 10
    1 / -0

    Which of the following is not a property of aluminium?

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